Clean Sweep, cleaning grassy area (2)

Chicago citation style
Clean Sweep, cleaning grassy area (2). May 1992. Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/lew_slide/id/679. (Accessed December 17, 2018.)
APA citation style
(May 1992) Clean Sweep, cleaning grassy area (2). Retrieved from the Digital Public Library of America, http://collections.carli.illinois.edu/cdm/ref/collection/lew_slide/id/679
MLA citation style
Retrieved from the Digital Public Library of America <http://collections.carli.illinois.edu/cdm/ref/collection/lew_slide/id/679>.
Note: These citations are programmatically generated and may be incomplete.